scholarly journals Emergence of Dynamic Memory Traces in Cortical Microcircuit Models through STDP

2013 ◽  
Vol 33 (28) ◽  
pp. 11515-11529 ◽  
Author(s):  
S. Klampfl ◽  
W. Maass
2021 ◽  
Vol 9 (19) ◽  
Author(s):  
Esra Mungan

This article is a sequel to “Gestalt Theory: Its Past, its Stranding, and its Future..”. It focuses on what Gestalt theory proposed and produced within the area of memory, which unfortunately are almost unknown. It is typically believed that Gestalt theory is a theory about perception only. This, however, is not true. The aim of this article is to bring to daylight the conceptual and empirical contributions of Gestalt theory within the field of memory. The first part of the article discusses some critical proposals about memory processes in Kurt Koffka’s Principles of Gestalt (1936) book. These involve Koffka’s proposal about the involvement and effects of memory processes in the perception of successive Gestalts; a discussion of the similarities and differences between percepts and memory traces; Koffka’s reference to research suggesting that memory traces are dynamic such that depending on their Prägnanz they will or will not change during storage; that the type of change can even be predicted in some cases. The article will then review one of the most powerful empirical studies on memory within a Gestalt framework, i. e., Hedwig von Restorff’s 1933 dissertation demonstrating how figure-ground effects are at play not only in perception but also in memory. In the final part of this article, I will present Erich Goldmeier’s very original and interesting memory work, which seemed utterly ignored by mainstream cognitive psychology. Keywords: Gestalt theory, figure-ground, Prägnanz & dynamic memory traces, Kurt Koffka, Hedwig von Restorff, Erich Goldmeier


Author(s):  
Alan J. Larkin ◽  
Félix Balado ◽  
Neil J. Hurley ◽  
Guenolé C. M. Silvestre

2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti

Abstract The target article carefully describes the memory system, centered on the temporal lobe that builds specific memory traces. It does not, however, mention the laterality effects that exist within this system. This commentary briefly surveys evidence showing that clear asymmetries exist within the temporal lobe structures subserving the core system and that the right temporal structures mainly underpin face familiarity feelings.


2011 ◽  
Vol 70 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Muriel Fanget ◽  
Catherine Thevenot ◽  
Caroline Castel ◽  
Michel Fayol

In this study, we used a paradigm recently developed ( Thevenot, Fanget, & Fayol, 2007 ) to determine whether 10-year-old children solve simple addition problems by retrieval of the answer from long-term memory or by calculation procedures. Our paradigm is unique in that it does not rely on reaction times or verbal reports, which are known to potentially bias the results, especially in children. Rather, it takes advantage of the fact that calculation procedures degrade the memory traces of the operands, so that it is more difficult to recognize them when they have been involved in the solution of an addition problem by calculation rather than by retrieval. The present study sharpens the current conclusions in the literature and shows that, when the sum of addition problems is up to 10, children mainly use retrieval, but when it is greater than 10, they mainly use calculation procedures.


Author(s):  
Ryoji Nishiyama ◽  
Jun Ukita

This study examined whether additional articulatory rehearsal induced temporary durability of phonological representations, using a 10-s delayed nonword free recall task. Three experiments demonstrated that cumulative rehearsal between the offset of the last study item and the start of the filled delay (Experiments 1 and 3) and a fixed rehearsal of the immediate item during the subsequent interstimulus interval (Experiments 2 and 3) improved free recall performance. These results suggest that an additional rehearsal helps to stabilize phonological representations for a short period. Furthermore, the analyses of serial position curves suggested that the frequency of the articulation affected the durability of the phonological representation. The significance of these findings as clues of the mechanism maintaining verbal information (i.e., verbal working memory) is discussed.


Author(s):  
Joseph F. Boudreau ◽  
Eric S. Swanson

While there is no such thing as a “typical” C++ class, several common syntactical constructs lend themselves to extremely widespread use and must be mastered by C++ programmers. To motivate the discussion of software design at the level of the C++ class, examples from computer science and optics are introduced. Important syntactical elements such as constructors, destructors, copy constructors, assignment operators, cast operators, and const qualifiers, together with function overloading, operator overloading, and dynamic memory allocation are discussed. These concepts, illustrated with examples from physics, are presented and explained. Further examples from optical and quantum mechanical problems are left to the exercises. This chapter and its exercises gives the reader sufficient information to begin developing his or her own classes and to experiment with class design through trial and error.


Author(s):  
Thomas Suddendorf

This article examines the nature and evolution of mental time travel. Evidence for capacities in other animals is reviewed and evaluated in terms of which components of the human faculty appear to be shared and which are unique. While some nonhuman animals store episodic memory traces and can display a range of future-directed capacities, they do not appear to share the open-ended ability to construct mental scenarios, to embed them into larger narratives, nor to reflect and communicate on what they entail. Nested scenario building and the urge to exchange mental experiences seem to set human minds apart in this context as in many others. The article ends with a discussion of the archeological evidence for mental time travel, focusing on deliberate practice as an example of its tremendous fitness consequences.


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